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Charging your watch
Charging time by environment
Below are the approximate charging times when exposing to light continuously.
Please use this table as a reference only.
Environment
Illuminance
(lx)
Charging time (approx.)
To work for one day
To start working
normally when the
cell is discharged
To become fully
charged when the cell
is discharged
Outdoors (sunny)
100,000 4 minutes 5.5 hours 50 hours
Outdoors (cloudy)
10,000 25 minutes 40 hours 270 hours
20 cm
(7-7/8 inches) away
from a fluorescent
lamp (30W)
3,000 1.5 hours 150 hours −
Interior lighting
500 8 hours − −
• Exposing to direct sunlight is recommended to charge your watch. A fluorescent
lamp or interior lighting does not have sufficient illumination to charge the
rechargeable cell efficiently.
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